%0 Journal Article
%T Injection terahertz laser using the resonant inter-layer radiative transitions in double-graphene-layer structure
%A V. Ryzhii
%A A. A. Dubinov
%A V. Ya. Aleshkin
%A M. Ryzhii
%A T. Otsuji
%J Physics
%D 2013
%I arXiv
%R 10.1063/1.4826113
%X We propose and substantiate the concept of terahertz (THz) laser enabled by the resonant electron radiative transitions between graphene layers (GLs) in double-GL structures. We estimate the THz gain for TM-mode exhibiting very low Drude absorption in GLs and show that the gain can exceed the losses in metal-metal waveguides at the low end of the THz range. The spectrum of the emitted photons can be tuned by the applied voltage. A weak temperature dependence of the THz gain promotes an effective operation at room temperature.
%U http://arxiv.org/abs/1309.2724v1